Lyric discussion by justinbaily21 

Cover art for Thou Shalt Always Kill lyrics by Dan Le Sac vs. Scroobius Pip

I first interpreted "kill" as "I just killed that performance" as well. The phoenix thing is in step with the rest of the song. The author is saying that you should do what makes sense, and not listen to what a higher authority says is correct (for their own abitrary reasons). I like "the four elements" of hip-hop part.